Radicchio seeds for the kitchen garden that intends to actually produce radicchio this year. Radicchio is the vegetable that taught Italian cooking that bitterness, handled correctly, is a compliment.

Radicchio is the burgundy Italian chicory that provides bitterness with conviction and improves after frost. Each packet is hermetically vacuum-sealed -- removing the oxygen that causes standard paper seed packets to lose germination viability within approximately one year. State law requires a 3-year viability label on sealed packaging. NASA research on hermetic seed storage indicates viability of up to 10 years under proper conditions. Every packet is non-GMO and germination-tested at independent third-party labs before it earns its Japanese woodblock print artwork.

How to Grow Radicchio from Seed

Sowing and Germination

Direct sow in late spring for autumn harvest. 0.5cm deep, thin to 30cm.

Care and Harvest

Bitter, flavourful Italian chicory. Heads form in cool weather. 85-100 days. Improves with light frost.

Why Vacuum-Sealed Seeds Last Longer

Standard paper seed packets are permeable to oxygen and moisture -- the two primary causes of seed degradation. Most paper-packaged seeds begin losing germination viability after approximately one year, contributing to significant garden-industry waste: packets purchased, not planted, expired, discarded. Shido Seeds are hermetically vacuum-sealed. The packet does not expire quietly in a drawer. It waits.

About the Packaging

Every Shido seed packet is illustrated in the style of Japanese 1910s woodblock printing -- designed and drawn in-house by Chive, the Toronto ceramics studio that has been exhibiting at the Chelsea Flower Show in London every year and does not, as a matter of principle, sell to big-box retailers. Customers collect the packets as a series. This was not the original plan.